This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X25-20, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 25mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X25-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke25 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X25-20
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20
The AirTAC SIJ80X25-20 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 5-25 mm extend window from the 25 mm nominal maximum. The 80 mm bore uses a G3/8 port, a Ø25 mm rod, and 36 mm adjustable cushions.
The direct replacement is the SAIJ80X25-20, preserving the ISO 15552 mounting interface, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This SKU lacks a magnet (-S) and cannot take a sensor. The stop screw sets end position only; it is not a lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X25-20 |
| Bore size | Ø80 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ80X25-20 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X25-20 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20 Is Used
Short-Stroke Clamping
Trimming the extend by up to 20 mm on-site allows precise clamping of variable thickness parts without swapping the cylinder.
Transfer Diverter
Field-tuning the 5-25 mm stroke window lets operators dial in the exact diverter finger position for changing product sizes.
Pallet Stop Adjustment
The external stop screw provides micro-adjustments to the end position for pallets of varying heights on a packaging line.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20 with the SAIJ80X25-20
To replace the SIJ80X25-20, order the exact direct replacement SAIJ80X25-20. Select the 20 mm adjust window if you need field tuning between 5 and 25 mm; otherwise a fixed SAI is simpler. Mounting interfaces (FA, LB, TC) reuse directly. Because this SKU lacks a magnet, it cannot accept a sensor; add -S for legacy CS1-B/DS1-B sensing. For long strokes up to the 1500 mm maximum, note that stroke lengths >=300 mm require careful side-load management to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X25-20
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X25-20 FAQ
Yes, the SIJ80X25-20 is discontinued. The direct replacement is the SAIJ80X25-20, which shares the identical ISO 15552 interface, 80 mm bore, 25 mm stroke, 20 mm adjust window, G3/8 port, and mounting options.
The external stop screw provides a 20 mm adjust window, shortening the 25 mm nominal extend stroke down to 5 mm. Note the stop sets position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X25-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X25-20 replacement — usually within 7-8 hours.